New StackWarp Hardware Flaw Breaks AMD SEV-SNP Protections in Zen Processors
hardware_vulnerabilityAMD_processorsZen_architecturecybersecurityStackWarpSEV-SNP_bypassconfidential_computingvirtual_machinesexploitunpatched_flaw
A team of researchers from the CISPA Helmholtz Center for Information Security (Germany) has uncovered a hardware vulnerability named StackWarp, affecting AMD processors from generations Zen 1 to Zen 5. This flaw allows an attacker with elevated privileges on a host server to execute malicious code within confidential virtual machines (CVMs), bypassing AMD SEV-SNP protections designed to ensure data integrity and confidentiality. No patch is mentioned in the disclosure. The impact affects secure virtualized environments using these technologies.